PI2003 Просмотр технического описания (PDF) - Vicor

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PI2003

Universal Active ORing Controller IC

Vicor 

• Forward Low-Current and VG > ½ VC

• VC pin Under-Voltage

Reverse current is the only fault condition that

initiates gate turn-off of the MOSFET (as well as a

fault flag signal). Forward Over-Current and

Forward Low-Current fault conditions issue a fault

flag signal to the FT pin, but do not affect the gate

of the MOSFET. The FT pin serves as an indicator

that a fault condition may be present. This

information can be reported to a Host to signal that

some system level maintenance may be required.

The FT pin can be connected to VC pin or system

logic bias voltage via a current limiting resistor.

When pulling up FT to an unregulated voltage

connect FC to FT . FC will clamp FT voltage to

one diode drop above VC. This current will return to

ground through the internal shunt.

Figure 2: PI2003 Controller Internal Block Diagram (10 Lead TDFN package pin out shown)

Figure 3: Comparator hysteresis, values are for reference only, please refer to the electrical specifications

Picor Corporation • picorpower.com

PI2003

Rev 1.0

Page 6 of 16

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